I have some object particles that I need to collide with the ground, but they collide above the ground. I have enabled “size affects collisions”. The particle object is exactly at 0.0.0 in the scène so there’s no problem with the center being off.
Yeah, the particle system is not at the professional level. It can not do truly realistic physics, so get it as close as possible, bake the simulation and then just move the floor/ground up to fake it. I have actually animated the floor to make it match the particles after a bake.
In this case it won’t really work because the fake space between the particle and the ground is relative to the particle’s size. Actually it’s pretty exact.
It’s like if the particle collision detector would calculate collitions at 50% of the size, it would work. Or the other way around, if there’s a way to cheat the particle object to be drawn in place of the particle to be sized 200% as tall as the actual particle, it would also work.
Could there be a way to cheat this? Grouping something to the particles doesn’t work. I’ll try some other stuff. If you or anyone thinks of something else, let me know.